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No exploitation reported

CVE-2020-11622

No exploitation reported by the sources we read.

  • Published2020-06-10

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.

Timeline

dates in UTC
  1. 2020-06-1020:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-11622?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-11622?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Arista cloudeos
BranchAffectedFixed in
4.21≥ 4.21.3m, ≤ 4.21.9mno fix published
4.22≥ 4.22.0, ≤ 4.22.4mno fix published
4.23≥ 4.23.0, ≤ 4.23.2mno fix published
4.21= 4.21.3fx-7368no fix published
4.21= 4.21.4-fcrfxno fix published
4.21= 4.21.4.1no fix published
4.21= 4.21.7.1no fix published
4.22= 4.22.2.0.1no fix published
4.22= 4.22.2.2.1no fix published
4.22= 4.22.3.1no fix published
4.23= 4.23.2.1no fix published
Arista veos
BranchAffectedFixed in
4.21≥ 4.21.3m, ≤ 4.21.9mno fix published
4.22≥ 4.22.0, ≤ 4.22.4mno fix published
4.23≥ 4.23.0, ≤ 4.23.2mno fix published
4.21= 4.21.3fx-7368no fix published
4.21= 4.21.4-fcrfxno fix published
4.21= 4.21.4.1no fix published
4.21= 4.21.7.1no fix published
4.22= 4.22.2.0.1no fix published
4.22= 4.22.2.2.1no fix published
4.22= 4.22.3.1no fix published
4.23= 4.23.2.1no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • FIRST EPSSEPSS score1.3 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-06-10
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-11622?

A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.

Is CVE-2020-11622 actively exploited?

Active exploitation of CVE-2020-11622 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-11622?

CVE-2020-11622 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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